1
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Huang YY, Wu B, Shi D, Liu D, Meng W, Ma J, Qin L, Li C, Zhang G, Zhang XS, Zhang D. A Heptacene Analogue Entailing a Quinoidal Benzodi[7]annulene (7/6/7 Ring) Core with a Tunable Configuration and Multiple Redox Properties. Angew Chem Int Ed Engl 2023; 62:e202300990. [PMID: 36861376 DOI: 10.1002/anie.202300990] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/26/2023] [Accepted: 03/01/2023] [Indexed: 03/03/2023]
Abstract
Non-benzenoid acenes containing heptagons have received increasing attention. We herein report a heptacene analogue containing a quinoidal benzodi[7]annulene core. Derivatives of this new non-benzenoid acene were obtained through an efficient synthetic strategy involving an Aldol condensation and a Diels-Alder reaction as key steps. The configuration of this heptacene analogue can be modulated from a wavy to a curved one by just varying the substituents from a (triisopropylsilyl)ethynyl group to a 2,4,6-triisopropylphenyl (Trip) group. When mesityl (Mes) groups are linked to the heptagons, the resulting non-benzenoid acene displays polymorphism with a tunable configuration from a curved to a wavy one upon varying the crystallization conditions. In addition, this new non-benzenoid acene can be oxidized or reduced by NOSbF6 or KC8 to the respective radical cation or radical anion. Compared with the neutral acene, the radical anion shows a wavy configuration and the central hexagon becomes aromatic.
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Affiliation(s)
- Yan-Ying Huang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Botao Wu
- College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
| | - Dandan Shi
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Dan Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Wei Meng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Junlong Ma
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Liyuan Qin
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Cheng Li
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Guanxin Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Xi-Sha Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Deqing Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
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2
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Dauvergne G, Naubron JV, Giorgi M, Bugaut X, Rodriguez J, Carissan Y, Coquerel Y. Enantiospecific Syntheses of Congested Atropisomers through Chiral Bis(aryne) Synthetic Equivalents. Chemistry 2022; 28:e202202473. [PMID: 35943888 PMCID: PMC10087792 DOI: 10.1002/chem.202202473] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Indexed: 12/13/2022]
Abstract
The synthetic equivalents of the enantiopure binaphthyl bis(aryne) atropisomers derived from BINOL (1,1'-bi-2,2'-naphtol) featuring a stereogenic axis vicinal to the two reactive triple bonds can be generated for the first time in solution in an enantiospecific manner. Using a two-step sequence based on the bidirectional [4+2] cycloaddition of furan derivatives followed by an aromatizative deoxygenation reaction, several 9,9'-bianthracenyl-based atropisomers could be prepared enantiospecifically in high enantiomeric purity. Alternatively, bidirectional reactions with anthracene, 2-bromostyrene, and perylene as the arynophiles afforded very congested bis(benzotriptycene), bis(tetraphene) and bis(anthra[1,2,3,4-ghi]perylene) nanocarbon atropisomers in equally high enantiomeric purity. In complement, cross reactions with two different arynophiles revealed possible. The unusual atropisomer prototypes described in this study open the way to enantiopure nanographene atropisomers designed for functions.
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Affiliation(s)
| | | | - Michel Giorgi
- Aix Marseille Univ, CNRS, Centrale Marseille, FSCM, Marseille, France
| | - Xavier Bugaut
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Jean Rodriguez
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Yannick Carissan
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Yoann Coquerel
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille, France
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3
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Du Y, McSkimming A, Mague JT, Pascal RA. The Pursuit of Perphenylterphenyls. Chemistry 2022; 28:e202200931. [DOI: 10.1002/chem.202200931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Yuchen Du
- Department of Chemistry Tulane University New Orleans LA 70118 USA
| | - Alex McSkimming
- Department of Chemistry Tulane University New Orleans LA 70118 USA
| | - Joel T. Mague
- Department of Chemistry Tulane University New Orleans LA 70118 USA
| | - Robert A. Pascal
- Department of Chemistry Tulane University New Orleans LA 70118 USA
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4
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Mattoteia D, Taglialatela‐Scafati O, Muñoz E, de la Vega L, Caprioglio D, Appendino G. Regiodivergent Synthesis of
ortho
‐ and
para
‐Cannabinoquinones. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001258] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Daiana Mattoteia
- Dipartimento di Scienze del Farmaco Università del Piemonte Orientale Largo Doengani 2 28100 Novara Italy
| | | | - Eduardo Muñoz
- Departamento de Biología Celular, Fisiología e Inmunología Universidad de Córdoba Hospital Universitario Reina Sofía, v. Menendez Pidal, s/n 14004 Córdoba Spain
| | - Laureano de la Vega
- Jacqui Wood Cancer Centre School of Medicine University of Dundee James Arnott Drive DD2 1U Dundee UK
| | - Diego Caprioglio
- Dipartimento di Scienze del Farmaco Università del Piemonte Orientale Largo Doengani 2 28100 Novara Italy
| | - Giovanni Appendino
- Dipartimento di Scienze del Farmaco Università del Piemonte Orientale Largo Doengani 2 28100 Novara Italy
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5
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Shimajiri T, Suzuki T, Ishigaki Y. Flexible C−C Bonds: Reversible Expansion, Contraction, Formation, and Scission of Extremely Elongated Single Bonds. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010615] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Takuya Shimajiri
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
| | - Takanori Suzuki
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
| | - Yusuke Ishigaki
- Department of Chemistry Faculty of Science Hokkaido University Sapporo 060-0810 Japan
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6
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Achuenu C, Carret S, Poisson J, Berthiol F. Application of Chiral Sulfinamides into Formation and Reduction of Sulfinylketimines to Obtain Valuable α‐Chiral Primary Amines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000608] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Chukuka Achuenu
- Département de Chimie Moléculaire (SERCO) UMR CNRS‐UGA5250, ICMG FR‐2607 Université Grenoble Alpes 301 Rue de la Chimie, BP 53 38058 Grenoble Cedex 9 France
| | - Sébastien Carret
- Département de Chimie Moléculaire (SERCO) UMR CNRS‐UGA5250, ICMG FR‐2607 Université Grenoble Alpes 301 Rue de la Chimie, BP 53 38058 Grenoble Cedex 9 France
| | - Jean‐François Poisson
- Département de Chimie Moléculaire (SERCO) UMR CNRS‐UGA5250, ICMG FR‐2607 Université Grenoble Alpes 301 Rue de la Chimie, BP 53 38058 Grenoble Cedex 9 France
| | - Florian Berthiol
- Département de Chimie Moléculaire (SERCO) UMR CNRS‐UGA5250, ICMG FR‐2607 Université Grenoble Alpes 301 Rue de la Chimie, BP 53 38058 Grenoble Cedex 9 France
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7
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Shimajiri T, Suzuki T, Ishigaki Y. Flexible C-C Bonds: Reversible Expansion, Contraction, Formation, and Scission of Extremely Elongated Single Bonds. Angew Chem Int Ed Engl 2020; 59:22252-22257. [PMID: 32830906 DOI: 10.1002/anie.202010615] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Indexed: 02/03/2023]
Abstract
Since carbon-carbon (C-C) covalent bonds are rigid and robust, the bond length is, in general, nearly constant and depends only on the bond order and hybrid orbitals. We report herein direct visualization of the reversible expansion and contraction of a C(sp3 )-C(sp3 ) single bond by light and heat. This flexibility of a C-C bond was demonstrated by X-ray analysis and Raman spectroscopy of hexaphenylethane (HPE)-type hydrocarbons with two spiro-dibenzocycloheptatriene units, the intramolecular [2+2] photocyclization of which and thermal cleavage of the resulting cyclobutane ring both occur in a single-crystalline phase. The force constant of the contracted C-C bond is 1.6 times greater than that of the expanded bond. Since formation of the cyclobutane ring and contraction of the C-C bond lower the HOMO level by approximately 1 eV, the oxidative properties of these HPEs with a flexible C-C bond can be deactivated/activated by light/heat.
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Affiliation(s)
- Takuya Shimajiri
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Takanori Suzuki
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Yusuke Ishigaki
- Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, 060-0810, Japan
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Jin H, Fürstner A. Modular Synthesis of Furans with up to Four Different Substituents by a trans-Carboboration Strategy. Angew Chem Int Ed Engl 2020; 59:13618-13622. [PMID: 32374441 PMCID: PMC7496670 DOI: 10.1002/anie.202005560] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Indexed: 01/18/2023]
Abstract
Propargyl alcohols, on treatment with MHMDS (M=Na, K), B2 (pin)2 , an acid chloride and a palladium/copper co-catalyst system, undergo a reaction cascade comprised of trans-diboration, regioselective acylation, cyclization and dehydration to give trisubstituted furylboronic acid pinacol ester derivatives in good yields; subsequent Suzuki coupling allows a fourth substituent of choice to be introduced and hence tetrasubstituted (arylated) furans to be formed. In terms of modularity, the method seems unrivaled, not least because each product can be attained by two orthogonal but convergent ways ("diagonal split"). This asset is illustrated by the "serial" formation of a "library" of all twelve possible furan isomers that result from systematic permutation of four different substituents about the heterocyclic core.
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Affiliation(s)
- Hongming Jin
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470, Mülheim/Ruhr, Germany
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9
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Jin H, Fürstner A. Modular Synthesis of Furans with up to Four Different Substituents by a
trans
‐Carboboration Strategy. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Hongming Jin
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim/Ruhr Germany
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10
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Xiao Y, Mague JT, Donahue JP, Wilson LJ, Kraml CM, Pascal RA. Synthesis and Structures of Polyphenylphenanthrenes. Chemistry 2020; 26:8458-8464. [DOI: 10.1002/chem.202001563] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/04/2020] [Indexed: 11/07/2022]
Affiliation(s)
- Yonglong Xiao
- Department of Chemistry Tulane University New Orleans LA 70118 USA
| | - Joel T. Mague
- Department of Chemistry Tulane University New Orleans LA 70118 USA
| | - James P. Donahue
- Department of Chemistry Tulane University New Orleans LA 70118 USA
| | | | | | - Robert A. Pascal
- Department of Chemistry Tulane University New Orleans LA 70118 USA
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11
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Xie G, Hauschild M, Hoffmann H, Ahrens L, Rominger F, Borkowski M, Marszalek T, Freudenberg J, Kivala M, Bunz UHF. 5,7,12,14-Tetrafunctionalized 6,13-Diazapentacenes. Chemistry 2020; 26:799-803. [PMID: 31609025 PMCID: PMC7004126 DOI: 10.1002/chem.201904516] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Indexed: 11/09/2022]
Abstract
The synthesis, property evaluation, and single crystal X-ray structures of four 5,7,12,14-tetrafunctionalized diazapentacenes are presented. The synthesis of these compounds either starts from tetrabromo-N,N-dihydrodiazapentacene or from a diazapentacene tetraketone. Pd-catalyzed coupling or addition of a lithium acetylide gave the precursors that furnish, after further redox reactions, the diazapentacenes as stable crystalline materials. The performance of the tetraphenyl-substituted compound as n-channel semiconductor was evaluated in organic field effect transistors.
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Affiliation(s)
- Gaozhan Xie
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Miriam Hauschild
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Hendrik Hoffmann
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Lukas Ahrens
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Frank Rominger
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Michal Borkowski
- Department of Molecular PhysicsLodz University of TechnologyZeromskiego 11690924LodzPoland
| | - Tomasz Marszalek
- Department of Molecular PhysicsLodz University of TechnologyZeromskiego 11690924LodzPoland
- Max Planck Institute for Polymer ResearchAckermannweg 1055128MainzGermany
| | - Jan Freudenberg
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
| | - Milan Kivala
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
- Centre for Advanced MaterialsIm Neuenheimer Feld 22569120HeidelbergGermany
| | - Uwe H. F. Bunz
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
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12
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Dyan OT, Borodkin GI, Zaikin PA. The Diels-Alder Reaction for the Synthesis of Polycyclic Aromatic Compounds. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901254] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Ok Ton Dyan
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry; 9 Academician Lavrentiev Ave. 630090 Novosibirsk Russian Federation
| | - Gennady I. Borodkin
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry; 9 Academician Lavrentiev Ave. 630090 Novosibirsk Russian Federation
- Novosibirsk State University; 630090 Novosibirsk Russian Federation
| | - Pavel A. Zaikin
- N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry; 9 Academician Lavrentiev Ave. 630090 Novosibirsk Russian Federation
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Cruz CM, Márquez IR, Castro‐Fernández S, Cuerva JM, Maçôas E, Campaña AG. A Triskelion‐Shaped Saddle–Helix Hybrid Nanographene. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201902529] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Carlos M. Cruz
- Departamento de Química Orgánica Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente Universidad de Granada Avda. Fuentenueva, s/n 18071 Granada Spain
| | - Irene R. Márquez
- Departamento de Química Orgánica Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente Universidad de Granada Avda. Fuentenueva, s/n 18071 Granada Spain
| | - Silvia Castro‐Fernández
- Departamento de Química Orgánica Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente Universidad de Granada Avda. Fuentenueva, s/n 18071 Granada Spain
| | - Juan M. Cuerva
- Departamento de Química Orgánica Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente Universidad de Granada Avda. Fuentenueva, s/n 18071 Granada Spain
| | - Ermelinda Maçôas
- Centro de Química Estructural and Institute of Nanoscience and Nanotechnology (IN) Instituto Superior Técnico University of Lisbon Av. Rovisco Pais, 1 1049-001 Lisboa Portugal
| | - Araceli G. Campaña
- Departamento de Química Orgánica Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente Universidad de Granada Avda. Fuentenueva, s/n 18071 Granada Spain
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14
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Cruz CM, Márquez IR, Castro‐Fernández S, Cuerva JM, Maçôas E, Campaña AG. A Triskelion‐Shaped Saddle–Helix Hybrid Nanographene. Angew Chem Int Ed Engl 2019; 58:8068-8072. [DOI: 10.1002/anie.201902529] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Indexed: 02/05/2023]
Affiliation(s)
- Carlos M. Cruz
- Departamento de Química Orgánica Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente Universidad de Granada Avda. Fuentenueva, s/n 18071 Granada Spain
| | - Irene R. Márquez
- Departamento de Química Orgánica Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente Universidad de Granada Avda. Fuentenueva, s/n 18071 Granada Spain
| | - Silvia Castro‐Fernández
- Departamento de Química Orgánica Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente Universidad de Granada Avda. Fuentenueva, s/n 18071 Granada Spain
| | - Juan M. Cuerva
- Departamento de Química Orgánica Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente Universidad de Granada Avda. Fuentenueva, s/n 18071 Granada Spain
| | - Ermelinda Maçôas
- Centro de Química Estructural and Institute of Nanoscience and Nanotechnology (IN) Instituto Superior Técnico University of Lisbon Av. Rovisco Pais, 1 1049-001 Lisboa Portugal
| | - Araceli G. Campaña
- Departamento de Química Orgánica Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente Universidad de Granada Avda. Fuentenueva, s/n 18071 Granada Spain
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